Chamley (1986) and Judd (1985) showed that, in a standard neoclassical growth model with capital accumulation and infinitely lived agents, either taxing or subsidizing capital cannot be optimal in the steady state. In this paper, we introduce innovation-led growth into the Chamley-Judd...

Nelson Rolihlahla Mandela's death on 5 December 2013 and his funeral ten days later were taken as an occasion in the global media to discuss the merits of political leadership for human security, with occasional comments on its pitfalls. This particular leader is not the most politically safe...

While security of our<em> </em>hominid<em> </em>encampments and settlements must have been at or near the top of our species priorities since our evolution some several hundred thousand years ago, awareness of the magnitude of our alterations, interactions and impacts on our world is a very recent event. Even...

An estimated 2.6 billion people rely on traditional biomass for home cooking and heating, so improving the efficiency of household cookstoves could provide significant environmental, social and economic benefits. Some researchers have estimated that potential greenhouse gas emission reductions...

Between 1940 and 2000 there has been a substantial increase of educational attainment in the United States. What caused this trend? We develop a model of human capital accumulation that features a non-degenerate distribution of educational attainment in the population. We use this framework to...

This paper raises basic questions about the process of economic growth. It questions the assumption, nearly universal since Solow’s seminal contributions of the 1950s, that economic growth is a continuous process that will persist forever. There was virtually no growth before 1750, and thus...

The Knowledge-Intensive Business Services (KIBS) sector has been growing in the US in the recent decades. KIBS are used to overcome the information friction between intermediate inputs and the input users that is generated by technology improvement. We use a Schumpeterian growth model with...

Abstract: This review article tries to answer four questions: (i) what are the stylized facts about uncertainty over time; (ii) why does uncertainty vary; (iii) do fluctuations in uncertainty matter; and (iv) did higher uncertainty worsen the Great Recession of 2007-2009? On the first question...

Greece's currently planned institutional reforms will help to get the country going with limited economic growth. With an economy based primarily on tourism, trade, and agriculture, Greece lacks an established competitive industry and an innovation-friendly environment, resulting in a low export...